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Linux Foundation

A Pragmatic Guide to Boot-Time Optimization

Linux Foundation via YouTube

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Overview

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This course presents a graded, maintainable approach to optimizing embedded-device boot time. It demonstrates measuring and reducing delays in userspace, init, the Linux kernel, and bootloader configuration, including U-Boot falcon mode.

Syllabus

License
About Chris Simmonds
Overview
Where it all goes wrong
Example system
Measuring boot time
Baseline measurement
Reducing user-space boot time
Measuring init boot time using Bootchart
Optimizing userspace
Running the app as init
First pass
Reducing kernel boot time
Measuring kernel boot time: Bootgraph
Second pass
Reducing bootloader boot time
Remove boot delay
Simplify boot scripts
Falcon mode
Third pass
Keep it up!
Conclusion

Taught by

Linux Foundation

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